Yes, ad blockers are legal in Denmark, provided they comply with local data protection and competition laws. The Danish Competition and Consumer Authority (DCCA) and the Danish Data Protection Agency (Datatilsynet) oversee their use, particularly concerning user consent and fair competition. No outright ban exists, but circumvention of anti-ad-blocking measures may trigger legal scrutiny under the Danish Marketing Practices Act.
Key Regulations for Ad Blockers in Denmark
- Data Protection Compliance: Ad blockers must not interfere with GDPR-compliant consent mechanisms under the Danish Data Protection Act. Blocking non-consensual tracking cookies without user opt-in may violate Article 6 of the GDPR, as enforced by Datatilsynet.
- Competition Law Restrictions: The DCCA prohibits ad blockers from distorting market competition by systematically disabling ads for all websites, as this could constitute unfair commercial practices under the Danish Marketing Practices Act (section 6).
- Website Anti-Bypass Measures: Publishers may deploy technical countermeasures (e.g., anti-ad-block scripts), but these must not constitute aggressive commercial practices under the Unfair Commercial Practices Directive (2005/29/EC), as transposed into Danish law.